scholarly journals Scaling Up the Process of Titanium Dioxide Nanotube Synthesis and Its Effect on Photoelectrochemical Properties

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5686
Author(s):  
Mariusz Szkoda ◽  
Konrad Trzciński ◽  
Zuzanna Zarach ◽  
Daria Roda ◽  
Marcin Łapiński ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Tio2 Nanotubes ◽  
Significant Contribution ◽  
Scaling Up ◽  
Photoelectrochemical Properties ◽  
Titanium Dioxide Nanotubes ◽  
Vis Spectroscopy ◽  
Show Evidence ◽  
First Time ◽  
Scanning Electron

In this work, for the first time, the influence of scaling up the process of titanium dioxide nanotube (TiO2NT) synthesis on the photoelectrochemical properties of TiO2 nanotubes is presented. Titanium dioxide nanotubes were obtained on substrates of various sizes: 2 × 2, 4 × 4, 5 × 5, 6 × 6, and 8 × 8 cm2. The electrode material was characterized using scanning electron microscopy as well as Raman and UV–vis spectroscopy in order to investigate their morphology, crystallinity, and absorbance ability, respectively. The obtained electrodes were used as photoanodes for the photoelectrochemical water splitting. The surface analysis was performed, and photocurrent values were determined depending on their place on the sample. Interestingly, the values of the obtained photocurrent densities in the center of each sample were similar and were about 80 µA·cm2. The results of our work show evidence of a significant contribution to wider applications of materials based on TiO2 nanotubes not only in photoelectrochemistry but also in medicine, supercapacitors, and sensors.

scholarly journals Microstructure of metatitanic acid and its transformation to rutile titanium dioxide

2020 ◽  
Vol 39 (1) ◽  
pp. 627-632
Author(s):  
Xiaoping Wu ◽  
Yong Liu
Keyword(s):  
Electron Microscopy ◽  
Titanium Dioxide ◽  
Secondary Particle ◽  
Building Blocks ◽  
X Ray ◽  
Metatitanic Acid ◽  
Primary Particles ◽  
Rutile Titanium Dioxide ◽  
First Time ◽  
Scanning Electron

AbstractThe microstructure of metatitanic acid and its transformations to titanium dioxide during calcination have been investigated previously. However, the detailed microstructure of metatitanic acid has not been elucidated. Herein, we report the high-resolution scanning electron microscopy and X-ray powder diffraction determinations of the microstructure of metatitanic acid and its transformation to titanium dioxide during calcination. It is the first time that the detailed microstructure of metatitanic acid and its transformation to rutile titanium dioxide during calcination have been observed and elucidated. A mechanism of the transformation from metatitanic acid to crystalline titanium dioxide during calcination is described. The basic building blocks of metatitanic acid are the ultrafine crystals with an averaged diameter of a few nanometres, and these ultrafine crystals aggregate to form the porous primary particles. The primary particles further agglomerate to form the porous secondary particle. During the calcination, metatitanic acid undergoes size enlargement of ultrafine crystals, anatase–rutile transformation, merge of primary particles, and the crystal growth of titanium dioxide.

scholarly journals CORROSION RESISTANCE AND MECHANICAL PROPERTIES OF TiO2 NANOTUBES / EPOXY COATING ON STEEL SPCC-JISG 3141

2018 ◽  
Vol 55 (5B) ◽  
pp. 203
Author(s):  
Duong Thi Hong Phan
Keyword(s):  
Corrosion Resistance ◽  
Titanium Dioxide ◽  
Epoxy Resin ◽  
Tio2 Nanotubes ◽  
Mechanical Performance ◽  
In Situ Polymerization ◽  
Salt Spray ◽  
Epoxy Coating ◽  
Test Model ◽  
Titanium Dioxide Nanotubes

     Titanium dioxide nanotubes (TNTs) have been considered the promising nanostructures employed for many practical applications such as biomedical, photonic and optoelectronic devices. Coatings prepared from epoxy-nano-TiO2 nanotubes synthesized by in situ polymerization were found to exhibit excellent corrosion resistance much superior to epoxy resin in aggressive environments. The corrosion studies were carried out on steel SPCC JISG 3141 plates coated with 5 wt % and without of TiO2 nanotubes (TNTs). The synthesis of titanium dioxide nanotubes (TNTs) using hydrothermal method was investigated. The synthesized TNTs were characterized with Fourier Transform Infrared Spectroscopy (FTIR), Brunauer-Emmett-Teller (BET) specific area surface test, X-ray diffraction (XRD) and Transmission Electron Microscope (TEM) imaging. The results demonstrated a unique tubular nanostructure of TNTs shape. The mechanical performance of the nanocomposites was examined to show that the 5 wt % TNTs/epoxy coating was more impact resistance, the film hardness behavior and bending resistance than epoxy coating. The effects of TNT particles on corrosion resistance of epoxy coating were studied by salt spray test (Model SAM Y90) and compared to that of non-filler. After 144 h exposure, the corrosion resistance of epoxy resin greatly improved by using reinforcing the white pigment of TNTs. The results indicated that the coating containing TNTs shows the best protection efficiency. 

scholarly journals Automatic characterization of titanium dioxide nanotubes by image processing of scanning electron microscopic images

2016 ◽  
Vol 6 ◽  
pp. 184798041667378
Author(s):  
Petra Caudrová Slavíková ◽  
Martina Mudrová ◽  
Jana Petrová ◽  
Jaroslav Fojt ◽  
Luděk Joska ◽  
...  
Keyword(s):  
Image Processing ◽  
Titanium Dioxide ◽  
Electron Microscopic ◽  
Titanium Dioxide Nanotubes ◽  
Microscopic Images ◽  
Scanning Electron Microscopic ◽  
Scanning Electron

A novel cost effective fabrication technique for highly preferential oriented TiO2 nanotubes

Nanoscale ◽  
2015 ◽  
Vol 7 (48) ◽  
pp. 20386-20390 ◽  
Author(s):  
Aijo John K ◽  
Johns Naduvath ◽  
Sudhanshu Mallick ◽  
Thoudinja Shripathi ◽  
Manju Thankamoniamma ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Single Crystal ◽  
Tio2 Nanotubes ◽  
Cost Effective ◽  
Superior Performance ◽  
Fabrication Technique ◽  
Titanium Dioxide Nanotubes

Single crystal like titanium dioxide nanotubes with orientation along the (001) direction are fabricated using a novel cost effective Zn-assisted method and their superior performance as electrodes in supercapacitors is demonstrated.

scholarly journals Zero-Bias Visible to Near-Infrared Horizontal p-n-p TiO2 Nanotubes Doped Monolayer Graphene Photodetector

Molecules ◽  
2019 ◽  
Vol 24 (10) ◽  
pp. 1870 ◽  
Author(s):  
Zehua Huang ◽  
Chunhui Ji ◽  
Luhua Cheng ◽  
Jiayue Han ◽  
Ming Yang ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Energy Band ◽  
Tio2 Nanotubes ◽  
Near Infrared ◽  
Monolayer Graphene ◽  
Band Theory ◽  
Zero Bias ◽  
Suitable Candidate ◽  
Titanium Dioxide Nanotubes ◽  
Energy Band Theory

We present a p-n-p monolayer graphene photodetector doped with titanium dioxide nanotubes for detecting light from visible to near-infrared (405 to 1310 nm) region. The built-in electric field separates the photo-induced electrons and holes to generate photocurrent without bias voltage, which allows the device to have meager power consumption. Moreover, the detector is very sensitive to the illumination area, and we analyze the reason using the energy band theory. The response time of the detector is about 30 ms. The horizontal p-n-p device is a suitable candidate in zero-bias optoelectronic applications.

scholarly journals Effect of Anodization Duration in the TiO2 Nanotubes Formation on Ti Foil and Photoelectrochemical Properties of TiO2 Nanotubes

2019 ◽  
Vol 29 (3) ◽  
pp. 77
Author(s):  
Asmaa Kadim Ayal
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Field Emission ◽  
Tio2 Nanotubes ◽  
Photoelectrochemical Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Halogen Light ◽  
Dimensional Variation ◽  
Scanning Electron

In this work, the effect of anodizing duration on the morphology and photoelectrochemical properties of TiO2 nanotubes arrays (NTAs) has been investigated The samples were characterized by X-ray diffraction (XRD) and energy dispersive X-ray (EDX) to characterize their crystalline structure and compositional. Surface morphological and their dimensional variation was examined by field emission scanning electron microscopy (FESEM). The anodizing duration played a significant role in the formation of TiO2 nanotubes arrays. Moreover, the photoelectrochemical properties (PEC) were studied through photocurrent measurements. Optimum anodizing duration of 60 min at 40 V exhibited maximum photocurrent of 0.03 mA cm-2 under illumination of halogen light.

Incorporation of Multi Wall Carbon Nanotubes into Glass-Surfaces via Laser-Treatment

2003 ◽  
Vol 772 ◽  
Author(s):  
T. Seeger ◽  
G. de la Fuente ◽  
W.K. Maser ◽  
A.M. Benito ◽  
A. Righi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Continuous Wave ◽  
Silica Surface ◽  
Multi Wall Carbon Nanotubes ◽  
Composite Formation ◽  
Multi Walled Carbon Nanotubes ◽  
Glass Surfaces ◽  
Walled Carbon Nanotubes ◽  
First Time ◽  
Scanning Electron

AbstractCarbon nanotubes (CNT) are interesting candidates for the reinforcement in robust composites and for conducting fillers in polymers due to their fascinating electronic and mechanical properties. For the first time, we report the incorporation of multi walled carbon nanotubes (MWNTs) into silica-glass surfaces by means of partial surface-melting caused by a continuous wave Nd:YAG laser. MWNTs were detected being well incorporated in the silica-surface. The composites are characterized using scanning electron microscopy (SEM) and Raman-spectroscopy. A model for the composite-formation is proposed based on heatabsorption by MWNTs and a partial melting of the silica-surface.

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